Aneroid condenser



May 18, 1937. J. A. M NALLY ANEROID CONDENSER Original Filed Nov. 5, 1931 ff M w M .Y m am M6 m m a J Y Patented May 18, 1937 UNITED STATES PATENT OFFICE Original application November 3, 1931, Serial No. 572,817. Patent No. 2,044,009. Divided and this applicationFebrua'ry 20, 1336, Serial No.

Claims.

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) This invention relates to an electric condenser so constructed that it is responsive to changes in the pressure of the ambient atmosphere and has among its objects:- To provide a condenser that, within the-limits imposed by its structure, has a variable capacity that is a function of the pressure to which it is subjected; to provide a condenser that may be used as an element to indi cate pressure changes; to provide an aneroid condenser that is simple and cheap to construct and unlikely to get out of order.

This application is a division of my copending application Serial No. 572,817 filed November 3, 1931 now Patent No. 2,044,009.

In the drawing:

Fig. 1 is a transverse section substantially on.

the line l-l, Fig. 2; and

Fig. 2 is a side elevational view of my invention. AsisshowninFig. 1,the aneroid condenser above 00 mentioned consists of two sets of plates 21 and 28, of material like that used in aneroid barometers, the former being in communication with a chamber 28 and the latter with chamber 30, the

space in the chambers and the plates being partially evacuated. Increase in air pressure will cause the walls of the plates to collapse toward each other, thus moving the plates farther from each other and decreasing their capacity, while diminution of the pressure will permit them to expand and come close together with a resultant increase in capacity. The aneroid condenser will be mounted in suitable insulating material 3|. It is to be understood that all joints are hermetically tight to prevent changes of pressure within the condenser, and that the sets of plates are con- 'nected into a circuit in the same manner as is customary in the art.

The invention described and claimed herein may be manufactured and used by or for the Government of the United States for governmental purposes without the payment oi any royalties thereon or therefor.

I claim:

l. A condenser comprising two partiallyevacuated chambers, and a plurality of equidistantly spaced hollow plates in communication with each chamber, the said plates having flexible, electrically conducting walls and being disposed 5 with the plates connected to one of said chambers intercalated between those connected to the other of said chambers and spaced therefrom.

2. A condenser comprising two sets of intercalated hollow plates substantially equidistantly spaced from each other, the spaces within the plates in each set being in communication with each other and partially evacuated the space within each of said plates being variable by changes of pressure in the medium in which said 1 plates are disposed.

3. A condenser comprising two sets of intercalated substantiallyequidistantly spaced hollow plates of flexible material, the spaces within the plates in each set being in communication with each other and partially evacuated the efiective spacings between said plates being variable by changes in pressure oi a medium wherein said plates are immersed.

4. A condenser comprising two sets of radially corrugated double walled members intercalated with each other, each of said members forming an inclosed chamber and being equally spaced from the members adjacent thereto, chamber means for each set with which the members of the respective sets are in communication, the space in said members and said chambers being at subatmospheric pressure.

5. A condenser comprising two sets of intercalated plates, the plates of each set being equally spaced from the plates of the other set, the spaces within the plates in each set being in communication with each other and partially evacuated each of said plates being variable in thickness in response to changes in pressure in the medium in which said plates are immersed.

JAMES MCNALLY. 

